Photoemission Studies Of Semiconductor Nanocrystals

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Photoemission Studies of Semiconductor Nanocrystals

Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis Photoemission Studies of Semiconductor Nanocrystals by :

Download or read book Photoemission Studies of Semiconductor Nanocrystals written by and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor nanocrystals have been the focus of much attention in the last ten years due predominantly to their size dependent optical properties. Namely, the band gap of nanocrystals exhibits a shift to higher energy with decreasing size due to quantum confinement effects. Research in this field has employed primarily optical techniques to study nanocrystals, and in this respect this system has been investigated extensively. In addition, one is able to synthesize monodisperse, crystalline particles of CdS, CdSe, Si, InP, InAs, as well as CdS/HgS/CdS and CdSe/CdS composites. However, optical spectroscopies have proven ambiguous in determining the degree to which electronic excitations are interior or surface admixtures or giving a complete picture of the density of states. Photoemission is a useful technique for understanding the electronic structure of nanocrystals and the effects of quantum confinement, chemical environments of the nanocrystals, and surface coverages. Of particular interest to the authors is the surface composition and structure of these particles, for they have found that much of the behavior of nanocrystals is governed by their surface. Previously, the authors had performed x-ray photoelectron spectroscopy (XPS) on CdSe nanocrystals. XPS has proven to be a powerful tool in that it allows one to determine the composition of the nanocrystal surface.

A Photoemission Investigation of Compound Semiconductor Monodisperse Clusters

Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis A Photoemission Investigation of Compound Semiconductor Monodisperse Clusters by :

Download or read book A Photoemission Investigation of Compound Semiconductor Monodisperse Clusters written by and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have used synchrotron radiation photoemission to probe the valence and core level electronic structure of compound-semiconductor monodisperse clusters (nanocrystals). These clusters exhibited a 10% or less variation relative to the mean diameter and were attached to the metal substrates via alkane chains. Direct evidence of gap broadening due to size variation in CdS clusters was observed. The novel utilization of alkane chain attachment is the key to eliminating the otherwise debilitating problem of sample charging, as occurs with powders. The quality of sample preparation was confirmed by other methods such as transmission electron microscopy, Raman scattering and x-ray diffraction. This work provides a direct link between photoemission studies of expitaxial ultra-thin films of compound semiconductors, the photon-spectroscopy measurements of cluster powders and the existing theories of quantum confinement in reduced dimensionality structures. 5 refs., 2 figs.

Photoemission from Optoelectronic Materials and their Nanostructures

Author : Kamakhya Prasad Ghatak
Publisher : Springer Science & Business Media
ISBN 13 : 0387786066
Total Pages : 340 pages
Book Rating : 4.3/5 (877 download)

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Book Synopsis Photoemission from Optoelectronic Materials and their Nanostructures by : Kamakhya Prasad Ghatak

Download or read book Photoemission from Optoelectronic Materials and their Nanostructures written by Kamakhya Prasad Ghatak and published by Springer Science & Business Media. This book was released on 2010-03-14 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, with the advent of fine line lithographical methods, molecular beam epitaxy, organometallic vapour phase epitaxy and other experimental techniques, low dimensional structures having quantum confinement in one, two and three dimensions (such as ultrathin films, inversion layers, accumulation layers, quantum well superlattices, quantum well wires, quantum wires superlattices, magneto-size quantizations, and quantum dots) have attracted much attention not only for their potential in uncovering new phenomena in nanoscience and technology, but also for their interesting applications in the areas of quantum effect devices. In ultrathin films, the restriction of the motion of the carriers in the direction normal to the film leads to the quantum size effect and such systems find extensive applications in quantum well lasers, field effect transistors, high speed digital networks and also in other quantum effect devices. In quantum well wires, the carriers are quantized in two transverse directions and only one-dimensional motion of the carriers is allowed.

Optical and Photoemission Studies of Amorphous Semiconductor Interfaces and Ultra Thin Layers

Author : Liyou Yang
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (551 download)

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Book Synopsis Optical and Photoemission Studies of Amorphous Semiconductor Interfaces and Ultra Thin Layers by : Liyou Yang

Download or read book Optical and Photoemission Studies of Amorphous Semiconductor Interfaces and Ultra Thin Layers written by Liyou Yang and published by . This book was released on 1988 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Photoemission Studies of Noble Metal Semiconductor Systems

Author : Alan Leonard Wachs
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (171 download)

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Book Synopsis Photoemission Studies of Noble Metal Semiconductor Systems by : Alan Leonard Wachs

Download or read book Photoemission Studies of Noble Metal Semiconductor Systems written by Alan Leonard Wachs and published by . This book was released on 1987 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Optical Properties of Semiconductor Nanocrystals

Author : S. V. Gaponenko
Publisher : Cambridge University Press
ISBN 13 : 0521582415
Total Pages : 263 pages
Book Rating : 4.5/5 (215 download)

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Book Synopsis Optical Properties of Semiconductor Nanocrystals by : S. V. Gaponenko

Download or read book Optical Properties of Semiconductor Nanocrystals written by S. V. Gaponenko and published by Cambridge University Press. This book was released on 1998-10-28 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the optical properties of low-dimensional semiconductor structures, a hot research area - for graduate students and researchers.

Semiconductor and Metal Nanocrystals

Author : Victor I. Klimov
Publisher : CRC Press
ISBN 13 : 0824757831
Total Pages : 479 pages
Book Rating : 4.8/5 (247 download)

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Book Synopsis Semiconductor and Metal Nanocrystals by : Victor I. Klimov

Download or read book Semiconductor and Metal Nanocrystals written by Victor I. Klimov and published by CRC Press. This book was released on 2003-11-07 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vast technological potential of nanocrystalline materials, as well as current intense interest in the physics and chemistry of nanoscale phenomena, has led to explosive growth in research on semiconductor nanocrystals, also known as nanocrystal quantum dots, and metal nanoparticles. Semiconductor and Metal Nanocrystals addresses current topics impacting the field including synthesis and assembly of nanocrystals, theory and spectroscopy of interband and intraband optical transitions, single-nanocrystal optical and tunneling spectroscopies, electrical transport in nanocrystal assemblies, and physical and engineering aspects of nanocrystal-based devices. Written by experts who have contributed pioneering research, this reference comprises key advances in the field of semiconductor nanocrystal quantum dots and metal nanoparticles over the past several years. Focusing specifically on nanocrystals generated through chemical techniques, Semiconductor and Metal Nanocrystals Merges investigative frontiers in physics, chemistry, and engineering Documents advances in nanocrystal synthesis and assembly Explores the theory of electronic excitations in nanoscale particles Presents comprehensive information on optical spectroscopy of interband and intraband optical transitions Reviews data on single-nanocrystal optical and tunneling spectroscopies Weighs controversies related to carrier relaxation dynamics in ultrasmall nanoparticles Discusses charge carrier transport in nanocrystal assemblies Provides examples of lasing and photovoltaic nanocrystal-based devices Semiconductor and Metal Nanocrystals is a must read for scientists, engineers, and upper-level undergraduate and graduate students interested in the physics and chemistry of nanoscale semiconductor and metal particles, as well as general nanoscale science. About the Editor: VICTOR I. KLIMOV is Team Leader, Softmatter Nanotechnology and Advanced Spectroscopy Team, Chemistry Division, Los Alamos National Laboratory, New Mexico. The recipient of the Los Alamos Fellows Prize (2000), he is a Fellow of the Alexander von Humboldt Foundation, leader of the Nanophotonics and Nanoelectronics Thrust of the Center for Integrated Nanotechnologies (U.S. Department of Energy), a member of the Los Alamos Board of Governors of the Institute for Complex Adaptive Matter, and a member of the Steering Committee for the Los Alamos Quantum Institute. He received the M.S. (1978), Ph.D. (1981), and Dr. Sci. (1993) degrees from Moscow State University, Russia.

Semiconductor Nanocrystals

Author : Alexander L. Efros
Publisher : Springer Science & Business Media
ISBN 13 : 1475736770
Total Pages : 277 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Semiconductor Nanocrystals by : Alexander L. Efros

Download or read book Semiconductor Nanocrystals written by Alexander L. Efros and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: A physics book that covers the optical properties of quantum-confined semiconductor nanostructures from both the theoretical and experimental points of view together with technological applications. Topics to be reviewed include quantum confinement effects in semiconductors, optical adsorption and emission properties of group IV, III-V, II-VI semiconductors, deep-etched and self assembled quantum dots, nanoclusters, and laser applications in optoelectronics.

Core Level Photoemission Studies of the Structure of Semiconductor Surfaces and Interfaces

Author : Dah-An Luh
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (463 download)

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Book Synopsis Core Level Photoemission Studies of the Structure of Semiconductor Surfaces and Interfaces by : Dah-An Luh

Download or read book Core Level Photoemission Studies of the Structure of Semiconductor Surfaces and Interfaces written by Dah-An Luh and published by . This book was released on 2000 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Photoactive Semiconductor Nanocrystal Quantum Dots

Author : Alberto Credi
Publisher : Springer
ISBN 13 : 3319511920
Total Pages : 179 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Photoactive Semiconductor Nanocrystal Quantum Dots by : Alberto Credi

Download or read book Photoactive Semiconductor Nanocrystal Quantum Dots written by Alberto Credi and published by Springer. This book was released on 2017-01-20 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

The Chemistry of Nanomaterials

Author : C. N. R. Rao
Publisher : John Wiley & Sons
ISBN 13 : 3527604170
Total Pages : 761 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis The Chemistry of Nanomaterials by : C. N. R. Rao

Download or read book The Chemistry of Nanomaterials written by C. N. R. Rao and published by John Wiley & Sons. This book was released on 2006-01-24 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: With this handbook the distinguished team of editors has combined the expertise of leading nanomaterials scientists to provide the latest overview of this field. The authors cover the whole spectrum of nanomaterials, ranging from theory, synthesis, properties, characterization to application, including such new developments as: · quantum dots, nanoparticles, nanoporous materials, as well as nanowires, nanotubes and nanostructural polymers · nanocatalysis, nanolithography, nanomanipulation · methods for the synthesis of nanoparticles. The book can thus be recommended for everybody working in nanoscience: Beginners can acquaint themselves with the exciting subject, while specialists will find answers to all their questions plus helpful suggestions for further research.

Electronic Structure of Semiconductor Nanocrystals

Author : Vicki Leigh Colvin
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.:/5 (33 download)

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Book Synopsis Electronic Structure of Semiconductor Nanocrystals by : Vicki Leigh Colvin

Download or read book Electronic Structure of Semiconductor Nanocrystals written by Vicki Leigh Colvin and published by . This book was released on 1994 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Photoemission Studies of II-VI Semiconductor Surface Core Level Shifts and Alkali Adsorption on Silicon

Author : Stefan Wiklund
Publisher :
ISBN 13 : 9789162806774
Total Pages : 40 pages
Book Rating : 4.8/5 (67 download)

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Book Synopsis Photoemission Studies of II-VI Semiconductor Surface Core Level Shifts and Alkali Adsorption on Silicon by : Stefan Wiklund

Download or read book Photoemission Studies of II-VI Semiconductor Surface Core Level Shifts and Alkali Adsorption on Silicon written by Stefan Wiklund and published by . This book was released on 1992 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Semiconductor Nanocrystal Quantum Dots

Author : Andrey Rogach
Publisher : Springer Science & Business Media
ISBN 13 : 3211752374
Total Pages : 374 pages
Book Rating : 4.2/5 (117 download)

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Book Synopsis Semiconductor Nanocrystal Quantum Dots by : Andrey Rogach

Download or read book Semiconductor Nanocrystal Quantum Dots written by Andrey Rogach and published by Springer Science & Business Media. This book was released on 2008-09-02 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to specifically focus on semiconductor nanocrystals, and address their synthesis and assembly, optical properties and spectroscopy, and potential areas of nanocrystal-based devices. The enormous potential of nanoscience to impact on industrial output is now clear. Over the next two decades, much of the science will transfer into new products and processes. One emerging area where this challenge will be very successfully met is the field of semiconductor nanocrystals. Also known as colloidal quantum dots, their unique properties have attracted much attention in the last twenty years.

X-ray and Photoelectron Spectroscopy of the Structure, Reactivity, and Electronic Structure of Semiconductor Nanocrystals

Author : Kimberly Sue Hamad
Publisher :
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.:/5 (34 download)

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Book Synopsis X-ray and Photoelectron Spectroscopy of the Structure, Reactivity, and Electronic Structure of Semiconductor Nanocrystals by : Kimberly Sue Hamad

Download or read book X-ray and Photoelectron Spectroscopy of the Structure, Reactivity, and Electronic Structure of Semiconductor Nanocrystals written by Kimberly Sue Hamad and published by . This book was released on 2000 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Photo-and Electro-luminescence Studies of Colloidal Semiconductor Nanocrystals

Author : David John Goorskey
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (631 download)

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Book Synopsis Photo-and Electro-luminescence Studies of Colloidal Semiconductor Nanocrystals by : David John Goorskey

Download or read book Photo-and Electro-luminescence Studies of Colloidal Semiconductor Nanocrystals written by David John Goorskey and published by . This book was released on 2005 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nanocrystals

Author : Sudheer Neralla
Publisher : BoD – Books on Demand
ISBN 13 : 9535107143
Total Pages : 214 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Nanocrystals by : Sudheer Neralla

Download or read book Nanocrystals written by Sudheer Neralla and published by BoD – Books on Demand. This book was released on 2012-08-29 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocrystals research has been an area of significant interest lately, due to the wide variety of potential applications in semiconductor, optical and biomedical fields. This book consists of a collection of research work on nanocrystals processing and characterization of their structural, optical, electronic, magnetic and mechanical properties. Various methods for nanocrystals synthesis are discussed in the book. Size-dependent properties such as quantum confinement, superparamagnetism have been observed in semiconductor and magnetic nanoparticles. Nanocrystals incorporated into different material systems have proven to possess improved properties. A review of the exciting outcomes nanoparticles study has provided indicates further accomplishments in the near future.